Strong vs Weak Acids and Bases

Consider the general equation for an acid in water:
HA(aq) + H₂O ↔ H₃O⁺ + A^-
If there is a lot of product, what does that tell you about the acid?

• K_a > 1  Strong acid

• K_a > 1  Weak acid

• K_a < 1  Strong acid

• K_a < 1  Weak acid

Which of the following is the correct definition for a strong acid?

• Partially dissociates into ions when dissolved in water and the change is not reversible

• Fully dissociates into ions when dissolved in water and the change is not reversible

• Fully dissociates into ions when dissolved in water and the change is reversible

• Partially dissociates into ions when dissolved in water and the change is reversible

Tags

NGSS.HS-PS1-4

Which of the following is a strong acid?

• Ethanoic acid

• Nitric acid

• Carbonic acid

• Citric acid

Strong acids and bases...

• do not break apart into ions (non-electrolyte)

• partially break apart into ions (weak electrolyte)

• completely break apart into ions (non-electrolyte)

• completely break apart into ions (strong electrolyte)

Tags

NGSS.HS-PS1-7

Which of the following is NOT a strong acid

• Sulfuric acid

• Hydrochloric acid

• Perchloric acid

• Hydrofluoric acid

What completely ionizes in solution?

• Weak acids

• Strong acids

• Strong Salts

• Neutral salts

This solution is filled with:

• Weak Acid

• Strong Base

• Strong Acid

• Weak Base

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-5

What are the weak acids and bases?

• all acids and bases are weak

• if not classified as strong, the acid/base is considered weak

• all acids and bases are strong

• there are more strong acids and bases than there are weak acids/bases

Which is the weakest acid?

• HF

• HNO₂

• CH₃COOH

• HClO

Aqueous solutions of a weak acid and a strong acid of equal concentration are compared. Which statements are correct?

I. The weak acid is less dissociated than the strong acid.

II. The strong acid reacts with a metal oxide but the weak acid does not.

III. The strong acid has greater conductivity than the weak acid.

• I and II only

• I and III only

• II and III only

• I, II and III